resuggest as another sale was brought up, thanks to horse nut for the sale and thanks to Lion for reminding me about the suggestion.

SALE 1

sold for 50 keys

https://backpack.tf/profiles/76561198298597700#!/compare/1562803200/1562889600

https://backpack.tf/profiles/76561198115458307#!/compare/1562716800/1562889600

SALE 2

unknown

https://backpack.tf/profiles/76561198055077856#!/compare/1562544000/1562716800

https://backpack.tf/profiles/76561198298597700#!/compare/1562457600/1562544000

SALE 3

sold for 48 keys

https://backpack.tf/profiles/76561198033370726#!/compare/1560211200/1560470400

https://backpack.tf/profiles/76561198055077856#!/compare/1560211200/1560470400

SALE 4

sold with terror watt samureye + strange mann of seven seas for secret to everybody stuntman

https://backpack.tf/profiles/76561198033370726#!/compare/1556582400/1556755200

using for stuntman

1 marketplace sale

109.99 on april 18 (109.99 / 1.77 = 62.14 rounding to 62 keys)

https://marketplace.tf/items/tf2/179;5;u14

classifieds at the time of making this suggestion.

https://gyazo.com/6967a4753eef5bdf06c177250a3378eb

sales at 48 and 50. marketplace sale at 62. 62 seems high due to two sales at lower, as well as it being very close to being outdated. going with 48-50 keys here.